A Study on High Power Factor Flyback Converter

AStudyonHighPowerFactorFlybackConverter-by Soonju Kang
Dept. of Control & Instrumentation Eng. Changwon National University
(Supervised by Professor Eui-ho Song)
Abstract
The PFC circuit in the existing AC/DC Converter is a Two-stage power
conversion method which controls a Power Factor Correction and output
voltage respectively. But there are disadvantages. The first, that is costly and
complex because of high parts count. The second, that is low efficiency due
to separate power conversion circuit.
So, this paper applies the Single-stage PFC circuit to a low power Flyback
Converter and verifies validity through manufacture of experimental SMPS of 30 W degree.
FULL PAPER HERE :http://www.4shared.com/file/76159444/225304c8/flybackhighpower.html

HIGH PRECISION AUTOMATIC VOLTAGE REGULATOR

HIGH PRECISION AUTOMATIC VOLTAGE REGULATOR USING SERIES -TRANSFORMER

PROF. ZHANG LEI-DEPARTAMENT OF ELECTRICAL ENGINEERING-CHONNAM UNIVERSITY

This paper the design and analysis of a PWM inverter type automatic voltage regulator (AVR ) involving hardware,software and the control system wich are described in paper elaborately.

The proposed AVR consist of a dc/ac inverter with reversible voltage control and a transformer for series voltage compensation.

PCIM 2009

CEREMONIA APERTURA -PCIM 2009 -POWER ELECTRONICS EUROPE
PARTE-1

PARTE-2

PARTE-3

Modular Design Helps Next Generation UPS Family Boost Reliability

The new generation of AEG Power Solution UPS
• Modern modular "Building block" to meet all customization requirements
• True on-line double conversion UPS (VFI SS 111)
• High robustness for harsh working environments
• Redundant controls for high reliability
• Small footprint
• High efficiency even at low output power
• Compatible with every type of battery
• Full digital control
• Top class communication platform.

ECPE Calendar of Events 2010: Topics & Dates